Method advantages: (1) The sizes of the optico-acoustic converter with equipment allow to carry out control of residual tension in remote sites of products. (2) Possibility of control of residual tension in any planes of large-size products. (3) Simple preparation of a surface for control of residual tension. (4) Insignificant mass-dimensional characteristics of the equipment allow to carry out control of residual tension on a place of production. (5) Lack of radiation hazard excludes need of registration of the sanitary and epidemiologic conclusion. (6) High sensitivity and universality of approach for all materials.
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